The main advantage and chief characteristic of a Steulchen boom is that it can be（）.

单项选择题The lifeboats on your vessel are stowed on cradles on deck and are handled by sheath-screw boom davits. Which of the following statements about launching a boat is TRUE?（）

A.The boat should be hoisted a few inches clear of the cradle before cranking out the davits
B.The inboard gripes should be cast off before the outboard gripes
C.The outboard section of the cradle must be released
D.The tricing pendants will automatically bring the boat alongside at the embarkation deck

单项选择题The International Load Line Certificate is a document indicating the（）of the various load lines of the vessel.

A.decks
B.cabins
C.holds
D.positions

单项选择题The internal volume of a cargo hold measured from the inside faces of the cargo battens，the lower side of the deck beams，and the top of the tank top ceiling is known as the（）.

A.gross tonnage
B.deadweight space
C.bale cubic
D.stowage area

单项选择题The holding power of an anchor increases when the（）.

A.amount of chain lying along the bottom increases
B.length of the catenary is reduced
C.mooring line tension is increased
D.amount of chain lying along the bottom decreases

单项选择题The crane manufacturer’s operating tables are posted near the（）.

A.crane pedestal
B.wire-rope locker
C.main deck
D.crane controls